Library Pseudo-Clement Clementine Homilies
Homily 4, Chapter 3: Object of the Mission
Therefore our lord Peter, having learned these things, has sent us to be investigators of the things that have been told him; that if they be so, we may write to him and let him know, so that he may come and convict him face to face of the accusations that he has uttered against him. Since, therefore, danger on the part of many souls lies before us, on this account we must neglect bodily rest for a short time; and we would learn truly from you who live here, whether the things which we have heard be true. Now tell us particularly.
English translation in Ante-Nicene Fathers, Vol. VIII (eds. Alexander Roberts and James Donaldson; Buffalo: Christian Literature Publishing Co., 1886). Public domain. Digital text via New Advent Church Fathers.